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Questions & Answers
is both barrel nuts included 16tpi and 18tpi with the handguard? because I have a DPMS platform with 18tpi 2023 Diamondback DB10 308

Lantec contacted me and said with the newer model Diamondback DB10 308 built on the DPMS upper receiver to order the Armalite with the 18TPI, Which isn't mentioned on the fitment, which I was preparing on doing, I just needed some reassurance!

by Greg Ortego, Verified Owner, January 29, 2026
Do I need the 18 or 16 TPI for the Wilson Combat BILLet-AR-10 receiver? Expert Answer

Wilson Combat does not state the threads of that upper receiver. From what information I could find you will need the 16TPI model of the Lancer Systems LCH7 Octagon Carbon Fiber Handguards. However, I recommend contacting Wilson Combat to confirm compatibility.

by Hunter, Gear Expert, November 2, 2022
Customer Reviews
Helpful Positive Review
Solid hand guard by Derrick, Verified Owner, October 7, 2022
Install was fairly easy, just make sure you have the proper tools readily available. Follow the instructions and you’ll be set. It’s light but as others have said it’s not too big of a difference in weight compared to the aluminum hand guards. Just b...
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4/4 found this helpful
Helpful Positive Review
After purchasing and mounting this hand guard on my AR-10 20" Rifle build I find my rifle to be very visually appealing with the carbon fiber weave however the mounting process for the hand guard requires an experienced gunsmith. The barrel nut/exten...
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2/4 found this helpful
Helpful Positive Review
6.5 cm build by emk, November 9, 2020
great looking handguard, fit and finish are top notch, extreme light weight fits hand well, stays cool under fire, barrel nut to receiver solid lockup, would I purchase again yes, shipping was fast very happy with outcome.
1/1 found this helpful
Helpful Negative Review
Design flaws by Julio, December 31, 2020
The weakness of the handguard is the mounting of the handguard. The handguard is bolted to the mount. However, this only works if the handguard is a very tight fit to the mount. Return the handguard if it is oversized for the mount, or tighten the...
Read More...
1/1 found this helpful
Most Recent Reviews
Lightweight & Sturdy by torval, Verified Owner, November 28, 2025
Purchased this to mirror my WWSD 5.56 build. It's lightweight and sturdy. It came pre-assembled and needed to be disassembled to install onto the upper receiver. The instructions are clear.
Most Recent Reviews
The Lancer Systems LCH7 Octagon Handguard is pure excellence and was the perfect finishing piece for my full-length 8.6 Blackout build. The design is sleek and aggressive, fitting the large-caliber aesthetic perfectly. More importantly, the strength ...
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Read All 11 Reviews
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Product Info for Lancer Systems LCH7 Octagon Carbon Fiber Handguards

The LCH7 is Lancer's flagship free-floating carbon fiber handguard which has been painstakingly engineered to reduce weight while improving the overall strength and accuracy of the AR-10 platform. Contrary to popular belief, we designed these handguards in carbon fiber not for cosmetic reasons, but because our carbon fiber handguards are lighter, stronger, and less heat-conductive than their aluminum counterparts. While they are certainly one of the best options on the market for competition use, they are much more than just "go-fast parts". The immense strength, durability, and low thermal conductivity of Lancer's carbon fiber handguards have made them the favored handguard system for some of the most demanding military units and law enforcement agencies both in the United States and in our allied countries around the globe.image

NOTE: The proprietary free-floating handguard mount requires the removal of the barrel and specialized knowledge of the AR-10 platform for successful installation and removal. Fixed front sight posts and gas blocks may also need to be removed during installation. If you're not comfortable performing these tasks on your rifle system, please consult a certified gunsmith for professional installation.

Specifications for Lancer Systems LCH7 Octagon Carbon Fiber Handguards:

Manufacturer: Lancer Systems
Color: Black
Fabric/Material: Carbon Fiber
Gun Make: AR Platform
Gun Type: Rifle
Handguard Type: Free-Float
Handguard Style: Round Rail
Gun Rail: M-LOK
Weight: 11.5 oz, 1 lb
Condition: New
Included Accessories: Standard
Inner Diameter: 1.89 in
Outer Diameter: 2.2 in
Mount Type: M-LOK
Country of Origin: USA
Quantity: 1

Features of Lancer Systems LCH7 Octagon Carbon Fiber Handguards

  • Accepts M-LOK 2″ Sight Rail;
  • Designed for DPMS High or Armalite ARs chambered in 7.62X51 / .308Win or similar .308 AR rifles with upper receivers threaded for 16/18 thread per inch barrel nut;
  • The handguard is a free float design comprising of a custom octagon shaped carbon-fiber handguard tube connected to the upper receiver with a 7075-T6 aluminum upper receiver extension;
  • Cooling slots have been provided to manage barrel temperature and allow the connection of accessory rails. Slots are provided at six o'clock for an accessory rail and holes for sling swivel stud so a bi-pod can be attached;
  • Free float design installation requires the removal of the rifle's barrel and specialized knowledge in AR rifle disassembly / assembly

Package Contents:

  • Lancer Systems LCH7 Octagon Carbon Fiber Handguards

Lancer Systems LCH7 Octagon Carbon Fiber Handguards Orderable Models

List of Orderable Models

  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 16.25 in, XL Length, Standard, 18 TPI, Black, LCH7-15-ML-ST-18 , MPN: LCH7-15-ML-ST-18 , UPC: 738435619688 , Code: 7UD-HZ-LCH7-LCH7-15-ML-ST-18
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 14.6 inch, Rifle Length Plus, Standard, 16 TPI, Black, LCH7-13-ML-ST-16 , MPN: LCH7-13-ML-ST-16 , UPC: 738435619695 , Code: 7UD-HZ-LCH7-LCH7-13-ML-ST-16
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 16.25 in, XL Length, Standard, 16 TPI, Black, LCH7-15-ML-ST-16 , MPN: LCH7-15-ML-ST-16 , UPC: 738435619671 , Code: 7UD-HZ-LCH7-LCH7-15-ML-ST-16
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 9.5 in, Mid-Length, Standard, 16 TPI, Black, LCH7-08-ML-ST-16 , MPN: LCH7-08-ML-ST-16 , UPC: 738435619732 , Code: 7UD-HZ-LCH7-LCH7-08-ML-ST-16
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 12.5 in, Rifle Length, Standard, 16 TPI, Black, LCH7-12-ML-ST-16 , MPN: LCH7-12-ML-ST-16 , UPC: 738435619718 , Code: 7UD-HZ-LCH7-LCH7-12-ML-ST-16
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 7.2 in, Carbine Length, Standard, 16 TPI, Black, LCH7-06-ML-ST-16 , MPN: LCH7-06-ML-ST-16 , UPC: 738435619756 , Code: 7UD-HZ-LCH7-LCH7-06-ML-ST-16
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 7.2 in, Carbine Length, Standard, 18 TPI, Black, LCH7-06-ML-ST-18 , MPN: LCH7-06-ML-ST-18 , UPC: 738435619763 , Code: 7UD-HZ-LCH7-LCH7-06-ML-ST-18
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 9.5 in, Mid-Length, Standard, 18 TPI, Black, LCH7-08-ML-ST-18 , MPN: LCH7-08-ML-ST-18 , UPC: 738435619749 , Code: 7UD-HZ-LCH7-LCH7-08-ML-ST-18
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 12.5 in, Rifle Length, Standard, 18 TPI, Black, LCH7-12-ML-ST-18 , MPN: LCH7-12-ML-ST-18 , UPC: 738435619725 , Code: 7UD-HZ-LCH7-LCH7-12-ML-ST-18
  • Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 14.6 in, Rifle Length Plus, Standard, 18 TPI, Black, LCH7-13-ML-ST-18 , MPN: LCH7-13-ML-ST-18 , UPC: 738435619701 , Code: 7UD-HZ-LCH7-LCH7-13-ML-ST-18

Lancer Systems LCH7 Octagon Carbon Fiber Handguards Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 9.5 in, Mid-Length, Standard, 16 TPI, Black, LCH7-08-ML-ST-16 , MPN: LCH7-08-ML-ST-16-DEMO , Code: 7UD-HZ-LCH7-LCH7-08-ML-ST-16-DEMO
  • USED Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 12.5 in, Rifle Length, Standard, 18 TPI, Black, LCH7-12-ML-ST-18, EDEMO1, Used, Condition Fair , MPN: LCH7-12-ML-ST-18-EDEMO1 , Code: 7UD-HZ-LCH7-LCH7-12-ML-ST-18-EDEMO1
  • USED, Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 12.5 in, Rifle Length, Standard, 16 TPI, Black, LCH7-12-ML-ST-16 , MPN: LCH7-12-ML-ST-16-EDEMO , Code: 7UD-HZ-LCH7-LCH7-12-ML-ST-16-EDEMO-RE-B
  • DEMO, Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 12.5 in, Rifle Length, Standard, 16 TPI, Black, LCH7-12-ML-ST-16 , MPN: LCH7-12-ML-ST-16-DEMO , Code: 7UD-HZ-LCH7-LCH7-12-ML-ST-16-DEMO
  • USED, Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 16.25 in, XL Length, Standard, 18 TPI, Black, LCH7-15-ML-ST-18 , MPN: LCH7-15-ML-ST-18-EDEMO , Code: 7UD-HZ-LCH7-LCH7-15-ML-ST-18-EDEMO-RE-B
  • DEMO, Lancer Systems LCH7 Octagon Carbon Fiber Handguard, 7.62mm, 16.25 in, XL Length, Standard, 16 TPI, Black, LCH7-15-ML-ST-16 , MPN: LCH7-15-ML-ST-16-DEMO , Code: 7UD-HZ-LCH7-LCH7-15-ML-ST-16-DEMO
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